/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.sql.*;

/**
 *
 * @author sa11
 */
public class RightPage1 extends HttpServlet {
    private String connURL = "jdbc:sqlserver://idasql-db.hb.se:56001; databaseName=dbtht1117";///dbtht1117"; // ange databas namn här";
    private String userName = "dbtht1117";
    private String password = "panwer09";

    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        try {
            /* TODO output your page here*/
            initiateSQL(out);
            /*out.println("</body>");
            out.println("</html>");
             /**/
        } finally {            
            out.close();
        }
    }
    
    private void initiateSQL(PrintWriter out){
        // driver and connection try catch
        Connection conn = null;
        Statement stmt = null;
        try {
            Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
            conn = DriverManager.getConnection(connURL, userName, password);
            stmt = conn.createStatement();
            
            /*
            // test
            DatabaseMetaData md = conn.getMetaData();
            ResultSet rs = md.getTables(null, null, "%", null);
            out.println("<p>");
            while (rs.next()) {
                out.println(rs.getString(3));
            }
            out.println("</p>");
             /**/

            ResultSet rs = stmt.executeQuery("SELECT b.datum, b.bloggID, b.rubrik, b.anvandarID, (SELECT COUNT(k.kommentarsID) FROM Kommentar k WHERE k.bloggID = b.bloggID), a.anvandarAlias FROM Blogg b, Kommentar k, Anvandare a WHERE a.anvandarID = b.anvandarID GROUP BY b.datum, b.bloggID, b.rubrik, b.anvandarID, a.anvandarAlias ORDER BY b.datum DESC;");
            out.println("<p>");
            while(rs.next()){
                out.println("<a href = \"BloggInlagg?bloggID=" + rs.getString("bloggID") + "\">Inlägg: " + rs.getString("bloggID") + rs.getString(3) + "</a><br />"); //printar bloggrubrik
                out.println("Författare: " + rs.getString(6) + "<br />"); //printar författaralias
                out.println("Antal kommentarer: " + rs.getString(5) + "<br />"); //printar antalet kommentarer

                out.println("<br />");
            }
            out.println("</p>");
            /**/
        } catch (ClassNotFoundException ex) {
            out.println("error at driver");
        } catch(java.sql.SQLException ex){
            out.println("error at initiateSQL");
        }
        finally{
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
